The Soul Shards mod adds a Soul Stealing enchant which gives you bonus kills for filling up the Soul Shards. This enchant is normally only available on Vile Swords, crafted from Corrupted Ingots. However, you can use the Uncrafting Table to turn a Vile Sword into a Diamond Sword, using 2 Diamonds and some XP. This retains whatever enchantments are on the item. The advantage to this is that Diamond Swords don't wear out as fast as Vile Swords, though one drawback is that they are more expensive to repair, as you need Diamonds to do so instead of Corrupted Ingot.
You can also then use the Anvil to combine it with other Diamond Sword to make a really nice weapon.
I made a how-to video if you need one.
Pretty simple and effective! The hardest part is getting a good weapon in the first place, but remember you can combine enchants via the Anvil. I actually made the original Vile Sword you see in my video from 3 other Vile Swords. If you have a mob grinder then the XP comes really fast as you can see in the video, then it's just a matter of spending the time and materials to get a good weapon.
You can also then use the Anvil to combine it with other Diamond Sword to make a really nice weapon.
I made a how-to video if you need one.
Pretty simple and effective! The hardest part is getting a good weapon in the first place, but remember you can combine enchants via the Anvil. I actually made the original Vile Sword you see in my video from 3 other Vile Swords. If you have a mob grinder then the XP comes really fast as you can see in the video, then it's just a matter of spending the time and materials to get a good weapon.